From: Peter Hurley Date: Mon, 11 Mar 2013 20:44:34 +0000 (-0400) Subject: tty: Complete ownership transfer of flip buffers X-Git-Tag: omap-for-v3.10/dt-fixes-for-merge-window~136^2~62 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4f98d4675166fc1991dbad7dd2af634df7c14061;p=pandora-kernel.git tty: Complete ownership transfer of flip buffers Waiting for buffer work to complete is not required for safely performing changes to the line discipline, once the line discipline is halted. The buffer work routine, flush_to_ldisc(), will be unable to acquire an ldisc ref and all existing references were waited until released (so it can't already have one). Ensure running buffer work which may reference the soon-to-be-gone tty completes and any buffer work running after this point retrieves a NULL tty. Also, ensure all buffer work is cancelled on port destruction. Signed-off-by: Peter Hurley Signed-off-by: Greg Kroah-Hartman --- Reading git-diff-tree failed